<template>
  <h2>当前求和为：{{ sum }}</h2>
  <button @click="sum++">点我＋1</button>
  <hr />
  <h2>当前点击时鼠标的坐标为：</h2>
  <h2>X:{{ point.y }}</h2>
  <h2>Y:{{ point.y }}</h2>
</template>

<script>
import { ref } from 'vue'
import usePoint from '../hooks/usePoint'
export default {
  name: 'Demo',
  setup(props, context) {
    let sum = ref(0)
    let point = usePoint()
    // 返回一个对象(常用)
    return {
      sum,
      point
    }
  }
}
</script>
